Affiliations:
HealthMap, Children’s Hospital Informatics Program, Harvard–Massachusetts Institute of Technology Division of Health Sciences and Technology, Boston, Massachusetts, United States of America,
Division of Emergency Medicine, Children’s Hospital Boston, Boston, Massachusetts, United States of America,
State University of New York at Albany, School of Public Health, Department of Epidemiology and Biostatistics, Rensselaer, New York, United States of America

Affiliations:
HealthMap, Children’s Hospital Informatics Program, Harvard–Massachusetts Institute of Technology Division of Health Sciences and Technology, Boston, Massachusetts, United States of America,
Division of Emergency Medicine, Children’s Hospital Boston, Boston, Massachusetts, United States of America,
Boston University, School of Public Health, Department of Epidemiology, Boston, Massachusetts, United States of America